Subtract 3/18 from 12/8
1st number: 1 4/8, 2nd number: 3/18
12/8 - 3/18 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
12/8 = 12 × 9/8 × 9 = 108/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
3/18 = 3 × 4/18 × 4 = 12/72 - Subtract the two like fractions:
108/72 - 12/72 = 108 - 12/72 = 96/72 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8-3/18 12/8-6/18 12/16-3/18 12/8-3/36 36/8-3/18 12/8-9/18 12/24-3/18 12/8-3/54 60/8-3/18 12/8-15/18 12/40-3/18 12/8-3/90 84/8-3/18 12/8-21/18 12/56-3/18